copula (version 0.999-15)

getAcop: Get "acopula" Family Object by Name

Description

Get one of our "acopula" family objects (see acopula-families by name.

Named strings for “translation” between different names and forms of Archimedean copulas.

Usage

getAcop (family, check = TRUE)
getAname(family, objName = FALSE)
.ac.shortNames
.ac.longNames
.ac.objNames
.ac.classNames

Arguments

family

either a character string, the short or longer form of the Archimedean family name (for example, "Clayton" or simply "C"; see the acopula-families documentation), or an acopula family object, or an object inheriting from class archmCopula.

check

logical indicating whether the class of the return value should be checked to be "acopula".

objName

logical indicating that the name of the R object should be returned, instead of the family name, e.g., "copClayton" instead of "Clayton".

Value

returns an "acopula" family object, typically one of one of our predefined ones.getAname() returns a character string, the name of an "acopula" family object..as.longnames etc are named string constants, useful in programming for all our (five) standard Archimedean families.

See Also

Our predefined acopula-families; the class definition "acopula".

Examples

getAcop("Gumbel")

## different ways of getting the same "acopula" family object:
stopifnot(## Joe (three ways):
          identical(getAcop("J"), getAcop("Joe")),
          identical(getAcop("J"), copJoe),
          ## Frank (yet another two different ways):
          identical(getAcop(frankCopula()), copFrank),
          identical(getAcop("frankCopula"), copFrank))

stopifnot(
  identical(getAname(claytonCopula()), getAname("C")),
  identical(getAname(copClayton), "Clayton"), identical(getAname("J"), "Joe"),
  identical(getAname(amhCopula(), TRUE), "copAMH"),
  identical(getAname(joeCopula(), TRUE), "copJoe")
)

.ac.shortNames
.ac.longNames
.ac.objNames
.ac.classNames